This learning track covers a comprehensive understanding of thermodynamics, its principles, and their practical applications. It starts with advanced principles of thermodynamics, focusing on concepts like system control volume, properties of pure substances, and the first and second laws of thermodynamics. The track then delves into the practical applications of these principles in devices like steam turbines, gas turbines, and vapor compression refrigeration devices. It further explores the concept of entropy generation and its application in various devices. The track also covers the fundamentals of exergy and second law efficiency, providing a detailed understanding of how to calculate mass, temperature, entropy, and exergy changes in different scenarios. It concludes with a deep dive into the principles of thermodynamic cycles and processes, engine cycles, refrigeration, psychrometry, HVAC systems, combustion thermodynamics, and compressible flow dynamics. The track uses illustrative examples to explain complex concepts, making it easier for learners to grasp and apply these principles in real-world scenarios. These courses have been developed by Prof. V. Raghavan from IIT Madras for NPTEL. It is now accessible through Ansys Innovation Space courtesy of the partnership between Ansys and NPTEL, under the CC BY-SA license. For more details, visit https://nptel.ac.in/courses/112106419.